dllmain.c

Go to the documentation of this file.

/*
 * COPYRIGHT:   See COPYING in the top level directory
 * PROJECT:     ReactOS WinSock 2 API
 * FILE:        dllmain.c
 * PURPOSE:     DLL Entrypoint
 * PROGRAMMER:  Alex Ionescu (alex@relsoft.net)
 */

/*
 * BUGS:
 *       - GetAddrInfoW is completely IPv4 hacked and has some dirty code.
 *       - LookupNodeByAddr is missing some IPv6 support.
 */

/* INCLUDES ******************************************************************/
#include "ws2_32.h"

/* DATA **********************************************************************/

HANDLE WsSockHeap;
HINSTANCE WsDllHandle;
DWORD GlobalTlsIndex = TLS_OUT_OF_INDEXES;

/* FUNCTIONS *****************************************************************/

BOOL
APIENTRY
DllMain(HANDLE hModule,
        DWORD dwReason,
        LPVOID lpReserved)
{
    PWSPROCESS WsProcess;

    /* Main Entrypoint */
    switch (dwReason) 
    {
        case DLL_PROCESS_ATTACH:
            /* Save DLL Handle */
            WsDllHandle = hModule;

            /* Get Global Heap */
            WsSockHeap = GetProcessHeap();

            /* TLS Allocation */
            if (GlobalTlsIndex == TLS_OUT_OF_INDEXES)
            {
                GlobalTlsIndex = TlsAlloc();
                if (GlobalTlsIndex == TLS_OUT_OF_INDEXES)
                {
                    return FALSE;
                }
            }

            /* Initialize some critical sections */
            WsCreateStartupSynchronization();
            WsAsyncGlobalInitialize();
            WsRasInitializeAutodial();
            break;

        case DLL_THREAD_ATTACH:
            break;

        case DLL_THREAD_DETACH:
            /* Destroy the attached Winsock Thread */
            WsThreadDestroyCurrentThread();
            break;

        case DLL_PROCESS_DETACH:
            /* Make sure we were initialized */
            if (!WsDllHandle) break;

            /* Check if this was a FreeLibrary call (ie: not process cleanup) */
            if (lpReserved)
            {
                /* Destroy the thread which is exiting */
                WsThreadDestroyCurrentThread();

                /* Check if we have a process and destroy it */
                WsProcess = WsGetProcess();
                if (WsProcess) WsProcDelete(WsProcess);

                /* Cleanup the Thread and Socket managers */
                WsThreadCleanup();
                WsSockCleanup();

                /* Cleanup critical sections */
                WsDestroyStartupSynchronization();
                WsAsyncGlobalTerminate();

                /* Free the TLS Index */
                TlsFree(GlobalTlsIndex);
            }

            /* Cleanup RAS auto-dial helper */
            WsRasUninitializeAutodial();

            /* Clear our handle */
            WsDllHandle = NULL;
            break;
    }

    /* Return to OS */
    return TRUE;
}

/*
 * @implemented
 */
INT
WSAAPI
WSAGetLastError(VOID)
{
    /* Let the Windows Function do the work */
    return GetLastError();
}

/*
 * @implemented
 */
VOID
WSAAPI
WSASetLastError(IN INT iError)
{
    /* Let the Windows Function do the work */
    SetLastError(iError);
}